<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <!-- 2. 为ECharts准备一个具备大小（宽高）的Dom -->
      <div id="main" style="width: 800px;height:500px;"></div>

    </el-card>
  </div>
</template>
<script>
// 1. 导入echarts
import * as echarts from 'echarts';
import _ from 'lodash';

export default {
  data() {
    return {
      options: {  // 需要合并的数据
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },
  created() {

  },
  async mounted() {
    // echarts需在dom创建之后执行，在mouted声明周期使用
    // 此时页面上元素，已经被渲染完毕
    // 3. 基于准备好的dom，初始化echarts实例
    var myChart = echarts.init(document.getElementById('main'));

    // 4. 准备数据和配置项
    const {data: res} = await this.$http.get('reports/type/1');
    if(res.meta.status != 200) return this.$message.error('获取统计数据失败');

    const result = _.merge(res.data, this.options);

    console.log(result);
    /* var option = {
      title: {
        text: '第一个 ECharts 实例'
      },
      tooltip: {},
      legend: {
        data:['销量']
      },
      xAxis: {
        data: ["衬衫","羊毛衫","雪纺衫","裤子","高跟鞋","袜子"]
      },
      yAxis: {},
      series: [{
        name: '销量',
        type: 'bar',
        data: [5, 20, 36, 10, 10, 20]
      }]
    }; */
    // 5. 展示数据
    myChart.setOption(res.data);
  },
  methods: {

  }
}
</script>
<style lang="less" scoped>

</style>